import java.util.Scanner;

/*
    @author:sa
    @date:2024/11/7 14:59
*/
public class ifDemo03 {
    public static void main(String[] args) {
        System.out.println("输入分数");
        Scanner scanner = new Scanner(System.in);
        String mark = scanner.nextLine();
        int m1 = Integer.parseInt(mark);
        if (m1>=90){
            System.out.println("优秀");
        }
        if (m1<90&&m1>=80){
            System.out.println("良好");
        }
        if (m1<80&&m1>=70){
            System.out.println("一般");
        }
        if (m1<70&&m1>=60){
            System.out.println("及格");
        }
        if (m1<60){
            System.out.println("不及格");
        }
    }
}